./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:18:55,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:18:55,423 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 03:18:55,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:18:55,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:18:55,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:18:55,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:18:55,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:18:55,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:18:55,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:18:55,467 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:18:55,467 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:18:55,467 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:18:55,468 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:18:55,468 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:18:55,468 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:18:55,468 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:18:55,468 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:18:55,468 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:18:55,469 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:18:55,469 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:18:55,469 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:18:55,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:18:55,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:18:55,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:18:55,470 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:18:55,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:18:55,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:18:55,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:18:55,471 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:18:55,471 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:18:55,471 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:18:55,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:18:55,471 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:18:55,472 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:18:55,472 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:18:55,472 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:18:55,472 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:18:55,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:18:55,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:18:55,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:18:55,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:18:55,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:18:55,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:18:55,473 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:18:55,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:18:55,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:18:55,474 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:18:55,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:18:55,474 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df [2024-11-14 03:18:55,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:18:55,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:18:55,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:18:55,841 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:18:55,842 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:18:55,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i Unable to find full path for "g++" [2024-11-14 03:18:57,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:18:58,494 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:18:58,498 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2024-11-14 03:18:58,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/data/b1c58c511/2058a596488e43df8653a5b70a6d3f04/FLAG204e71933 [2024-11-14 03:18:58,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/data/b1c58c511/2058a596488e43df8653a5b70a6d3f04 [2024-11-14 03:18:58,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:18:58,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:18:58,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:18:58,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:18:58,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:18:58,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:18:58" (1/1) ... [2024-11-14 03:18:58,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddee640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:18:58, skipping insertion in model container [2024-11-14 03:18:58,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:18:58" (1/1) ... [2024-11-14 03:18:58,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:19:00,018 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:19:00,050 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:19:00,075 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:19:00,165 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:19:00,202 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:19:00,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:19:00,298 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:19:00,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:19:00,925 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:19:00,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00 WrapperNode [2024-11-14 03:19:00,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:19:00,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:19:00,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:19:00,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:19:00,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,208 INFO L138 Inliner]: procedures = 472, calls = 2681, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 3380 [2024-11-14 03:19:01,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:19:01,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:19:01,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:19:01,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:19:01,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:19:01,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:19:01,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:19:01,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:19:01,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (1/1) ... [2024-11-14 03:19:01,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:19:01,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:19:01,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:19:01,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:19:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-14 03:19:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-14 03:19:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 03:19:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-14 03:19:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-14 03:19:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-14 03:19:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:19:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-14 03:19:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-14 03:19:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 03:19:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-14 03:19:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-14 03:19:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-14 03:19:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:19:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:19:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-14 03:19:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-14 03:19:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:19:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:19:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-14 03:19:01,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-14 03:19:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-14 03:19:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-14 03:19:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-14 03:19:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-14 03:19:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-14 03:19:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-14 03:19:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:19:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:19:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-14 03:19:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-14 03:19:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:19:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:19:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-14 03:19:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-14 03:19:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:19:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:19:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-14 03:19:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-14 03:19:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-14 03:19:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-14 03:19:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-14 03:19:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-14 03:19:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:19:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-14 03:19:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-14 03:19:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-14 03:19:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-14 03:19:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-14 03:19:01,548 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-14 03:19:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-14 03:19:01,548 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-14 03:19:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-14 03:19:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-14 03:19:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-14 03:19:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-14 03:19:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:19:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-14 03:19:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-14 03:19:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-14 03:19:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-14 03:19:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-14 03:19:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-14 03:19:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-14 03:19:01,553 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-14 03:19:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 03:19:01,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 03:19:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:19:02,114 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:19:02,118 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:19:09,340 INFO L? ?]: Removed 650 outVars from TransFormulas that were not future-live. [2024-11-14 03:19:09,341 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:19:10,532 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:19:10,532 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 03:19:10,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:19:10 BoogieIcfgContainer [2024-11-14 03:19:10,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:19:10,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:19:10,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:19:10,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:19:10,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:18:58" (1/3) ... [2024-11-14 03:19:10,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d9ca2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:19:10, skipping insertion in model container [2024-11-14 03:19:10,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:19:00" (2/3) ... [2024-11-14 03:19:10,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d9ca2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:19:10, skipping insertion in model container [2024-11-14 03:19:10,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:19:10" (3/3) ... [2024-11-14 03:19:10,551 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outw_p.i [2024-11-14 03:19:10,572 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:19:10,575 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG ddv_machzwd_outw_p.i that has 29 procedures, 578 locations, 1 initial locations, 4 loop locations, and 205 error locations. [2024-11-14 03:19:10,649 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:19:10,667 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d6ef9a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:19:10,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2024-11-14 03:19:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 574 states, 264 states have (on average 2.015151515151515) internal successors, (532), 475 states have internal predecessors, (532), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-14 03:19:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:19:10,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:19:10,686 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:19:10,686 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:19:10,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:19:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash 44049359, now seen corresponding path program 1 times [2024-11-14 03:19:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:19:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553990181] [2024-11-14 03:19:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:19:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:19:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:19:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:19:15,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:19:15,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553990181] [2024-11-14 03:19:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553990181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:19:15,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:19:15,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:19:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683082427] [2024-11-14 03:19:15,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:19:15,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:19:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:19:15,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:19:15,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:19:15,537 INFO L87 Difference]: Start difference. First operand has 574 states, 264 states have (on average 2.015151515151515) internal successors, (532), 475 states have internal predecessors, (532), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:19:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:19:17,702 INFO L93 Difference]: Finished difference Result 1037 states and 1237 transitions. [2024-11-14 03:19:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:19:17,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 03:19:17,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:19:17,728 INFO L225 Difference]: With dead ends: 1037 [2024-11-14 03:19:17,729 INFO L226 Difference]: Without dead ends: 1035 [2024-11-14 03:19:17,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:19:17,736 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 581 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:19:17,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1713 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-14 03:19:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-14 03:19:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 843. [2024-11-14 03:19:17,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 450 states have (on average 2.0044444444444443) internal successors, (902), 672 states have internal predecessors, (902), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-14 03:19:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1178 transitions. [2024-11-14 03:19:17,882 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1178 transitions. Word has length 4 [2024-11-14 03:19:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:19:17,883 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1178 transitions. [2024-11-14 03:19:17,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:19:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1178 transitions. [2024-11-14 03:19:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:19:17,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:19:17,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:19:17,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:19:17,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:19:17,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:19:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash 44049360, now seen corresponding path program 1 times [2024-11-14 03:19:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:19:17,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147022769] [2024-11-14 03:19:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:19:17,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:19:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:19:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:19:21,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:19:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147022769] [2024-11-14 03:19:21,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147022769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:19:21,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:19:21,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:19:21,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751129428] [2024-11-14 03:19:21,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:19:21,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:19:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:19:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:19:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:19:21,968 INFO L87 Difference]: Start difference. First operand 843 states and 1178 transitions. Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:19:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:19:23,752 INFO L93 Difference]: Finished difference Result 961 states and 1256 transitions. [2024-11-14 03:19:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:19:23,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 03:19:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:19:23,759 INFO L225 Difference]: With dead ends: 961 [2024-11-14 03:19:23,759 INFO L226 Difference]: Without dead ends: 961 [2024-11-14 03:19:23,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:19:23,760 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 234 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:19:23,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1933 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 03:19:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2024-11-14 03:19:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 903. [2024-11-14 03:19:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 478 states have (on average 1.9644351464435146) internal successors, (939), 701 states have internal predecessors, (939), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-14 03:19:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1253 transitions. [2024-11-14 03:19:23,802 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1253 transitions. Word has length 4 [2024-11-14 03:19:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:19:23,803 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1253 transitions. [2024-11-14 03:19:23,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:19:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1253 transitions. [2024-11-14 03:19:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:19:23,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:19:23,804 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:19:23,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:19:23,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:19:23,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:19:23,805 INFO L85 PathProgramCache]: Analyzing trace with hash 108704201, now seen corresponding path program 1 times [2024-11-14 03:19:23,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:19:23,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321477885] [2024-11-14 03:19:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:19:23,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:19:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:19:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:19:26,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:19:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321477885] [2024-11-14 03:19:26,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321477885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:19:26,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:19:26,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:19:26,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656631662] [2024-11-14 03:19:26,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:19:26,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:19:26,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:19:26,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:19:26,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:19:26,511 INFO L87 Difference]: Start difference. First operand 903 states and 1253 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:19:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:19:27,549 INFO L93 Difference]: Finished difference Result 1088 states and 1305 transitions. [2024-11-14 03:19:27,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:19:27,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-14 03:19:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:19:27,557 INFO L225 Difference]: With dead ends: 1088 [2024-11-14 03:19:27,557 INFO L226 Difference]: Without dead ends: 1088 [2024-11-14 03:19:27,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:19:27,558 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 565 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:19:27,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 929 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:19:27,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2024-11-14 03:19:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 902. [2024-11-14 03:19:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 478 states have (on average 1.9539748953974896) internal successors, (934), 700 states have internal predecessors, (934), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-14 03:19:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1248 transitions. [2024-11-14 03:19:27,616 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1248 transitions. Word has length 9 [2024-11-14 03:19:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:19:27,617 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1248 transitions. [2024-11-14 03:19:27,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:19:27,617 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1248 transitions. [2024-11-14 03:19:27,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:19:27,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:19:27,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:19:27,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:19:27,618 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:19:27,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:19:27,618 INFO L85 PathProgramCache]: Analyzing trace with hash 108704202, now seen corresponding path program 1 times [2024-11-14 03:19:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:19:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569101468] [2024-11-14 03:19:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:19:27,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:19:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:19:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:19:30,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:19:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569101468] [2024-11-14 03:19:30,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569101468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:19:30,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:19:30,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:19:30,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892883103] [2024-11-14 03:19:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:19:30,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:19:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:19:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:19:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:19:30,510 INFO L87 Difference]: Start difference. First operand 902 states and 1248 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:19:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:19:31,726 INFO L93 Difference]: Finished difference Result 963 states and 1260 transitions. [2024-11-14 03:19:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:19:31,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-14 03:19:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:19:31,732 INFO L225 Difference]: With dead ends: 963 [2024-11-14 03:19:31,732 INFO L226 Difference]: Without dead ends: 963 [2024-11-14 03:19:31,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:19:31,734 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 231 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:19:31,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1484 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:19:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-11-14 03:19:31,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 905. [2024-11-14 03:19:31,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 481 states have (on average 1.948024948024948) internal successors, (937), 703 states have internal predecessors, (937), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-14 03:19:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1251 transitions. [2024-11-14 03:19:31,778 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1251 transitions. Word has length 9 [2024-11-14 03:19:31,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:19:31,778 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1251 transitions. [2024-11-14 03:19:31,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:19:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1251 transitions. [2024-11-14 03:19:31,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:19:31,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:19:31,781 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:19:31,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:19:31,782 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:19:31,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:19:31,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1386554291, now seen corresponding path program 1 times [2024-11-14 03:19:31,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:19:31,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917322684] [2024-11-14 03:19:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:19:31,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:19:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:19:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:19:34,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:19:34,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917322684] [2024-11-14 03:19:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917322684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:19:34,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143403840] [2024-11-14 03:19:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:19:34,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:19:34,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:19:34,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:19:34,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b278ce0-51cb-49eb-b05d-ec59713acf7d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:19:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:19:37,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 5469 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:19:37,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:19:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:19:37,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:19:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:19:37,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143403840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:19:37,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [913218857] [2024-11-14 03:19:37,975 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 03:19:37,976 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:19:37,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:19:37,985 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:19:37,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:21:09,292 WARN L286 SmtUtils]: Spent 7.03s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:22:16,862 WARN L286 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:23:19,747 WARN L286 SmtUtils]: Spent 7.70s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:24:44,720 WARN L286 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:25:22,876 WARN L286 SmtUtils]: Spent 12.50s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:25:35,365 WARN L286 SmtUtils]: Spent 12.47s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:25:54,590 WARN L286 SmtUtils]: Spent 19.19s on a formula simplification. DAG size of input: 11415 DAG size of output: 11415 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:26:06,816 WARN L286 SmtUtils]: Spent 12.21s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:26:18,624 WARN L286 SmtUtils]: Spent 11.80s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:26:36,484 WARN L286 SmtUtils]: Spent 17.84s on a formula simplification. DAG size of input: 11415 DAG size of output: 11415 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)